package tools;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class FileOperation
{
   public static void main(String args[]){
	   FileOperation t = new FileOperation();
//       delFolder("dest");
	   delAllFile("dest");
       System.out.println("deleted");
}

   //拷贝文件
  public static boolean copy(String fileFrom, String fileTo) {  
       try {  
          FileInputStream in = new java.io.FileInputStream(fileFrom);  
           FileOutputStream out = new FileOutputStream(fileTo);  
            byte[] bt = new byte[1024];  
           int count;  
            while ((count = in.read(bt)) > 0) {  
               out.write(bt, 0, count);  
            }  
          in.close();  
           out.close();  
           return true;  
       } catch (IOException ex) {  
           return false;  
       }  
   }
//删除文件夹
//param folderPath 文件夹完整绝对路径

     public static void delFolder(String folderPath) {
     try {
        delAllFile(folderPath); //删除完里面所有内容
        String filePath = folderPath;
        java.io.File myFilePath = new java.io.File(filePath);
        myFilePath.delete(); //删除空文件夹
     } catch (Exception e) {
       e.printStackTrace(); 
     }
}

//删除指定文件夹下所有文件
//param path 文件夹完整绝对路径
   public static boolean delAllFile(String path) {
       boolean flag = false;
       File file = new File(path);
       if (!file.exists()) {
         return flag;
       }
       if (!file.isDirectory()) {
         return flag;
       }
       String[] tempList = file.list();
       File temp = null;
       for (int i = 0; i < tempList.length; i++) {
          if (path.endsWith(File.separator)) {
             temp = new File(path + tempList[i]);
          } else {
              temp = new File(path + File.separator + tempList[i]);
          }
          if (temp.isFile()) {
             temp.delete();
          }
          if (temp.isDirectory()) {
             delAllFile(path + "/" + tempList[i]);//先删除文件夹里面的文件
             delFolder(path + "/" + tempList[i]);//再删除空文件夹
             flag = true;
          }
       }
       return flag;
     }
}